Kiev Says Moscow Sent Tanks, Armored Vehicles Into Its Territory

MOSCOW—Russia said it wants to send a second convoy of what it calls humanitarian aid into Ukraine in the coming days, while Kiev accused Moscow of moving tanks across the border, further damping hopes for peace talks between the Ukrainian and Russian presidents set for Tuesday in Minsk.

Amid signs of sharpening fighting in Ukraine's east, Kiev said Moscow sent a column of tanks and armored vehicles into its territory near the site of a rebel offensive. Ukraine's military said it attacked the column and blocked its...